Problem:    Not running the startup test on MS-Windows.
Solution:   Write vimcmd.

Problem:    Small build can't run tests.
Solution:   Don't try setting 'packpath'.

Problem:    Small build can't run startup test.
Solution:   Skip the test.

Problem:    Startup test fails on MS-Windows.
Solution:   Don't check output if RunVim() returns zero.

Problem:    It is not possible to use plugins in an "after" directory to tune
            the behavior of a package.
Solution:   First load plugins from non-after directories, then packages and
            finally plugins in after directories.
            Reset 'loadplugins' before executing --cmd arguments.

Problem:    match() and related functions tested with old style test.
Solution:   Convert to new style test. (Hirohito Higashi)

Problem:    Result of getcompletion('', 'sign') depends on previous
            completion.
Solution:   Call set_context_in_sign_cmd(). (Dominique Pelle)

Problem:    Expression test fails without conceal feature.
Solution:   Only check "conceal" with the conceal feature.

Problem:    setmatches() mixes up values. (Nikolai Pavlov)
Solution:   Save the string instead of reusing a shared buffer.

Problem:    Insufficient testing for cscope.
Solution:   Add more tests. (Dominique Pelle)